Setting Direction of Opening on Insertion
The direction of opening is indicated by an arrow during insertion in 2D and 3D views. The direction of opening changes in 3D depending on the side of the wall to which the cursor is pointed, and in 2D plan views depending on the position of the cursor in relation to the axis of the wall. In cross-sections the direction of opening does not change on insertion and is always in the direction of the cutting line.
